Create deployment_k8s.md

This commit is contained in:
Alex Ellis 2017-08-23 09:06:36 +01:00 committed by GitHub
parent b6002e1c85
commit 907a55f60d

72
guide/deployment_k8s.md Normal file
View File

@ -0,0 +1,72 @@
# Deployment guide for Kubernetes
> Note: The best place to start is the README file in the faas or faas-netes repo.
## Kubernetes
### Build a cluster
You can start evaluating FaaS and building functions on your laptop or on a VM (cloud or on-prem).
* [10 minute guides for minikube / kubeadm](https://blog.alexellis.io/tag/k8s/)
### Deploy OpenFaaS
* Clone the code
```
$ git clone https://github.com/alexellis/faas-netes
```
* Deploy the services
```
$ cd faas-netes
$ kubectl apply -f ./faas.yml,monitoring.yml,rbac.yml
```
That's it. You now have OpenFaaS deployed.
For simplicity the default configuration uses NodePorts rather than an IngressController (which is more complicated to setup).
| Service | TCP port |
--------------------|----------|
| API Gateway / UI | 31112 |
| Prometheus | 31119 |
> If you're an advanced Kubernetes user, you can add an IngressController to your stack and remove the NodePort assignments.
* Deploy a sample function
There are currently no sample functions built into this stack, but we can deploy them quickly via the UI or FaaS-CLI.
**Use the CLI**
Follow the tutorial below, but change your gateway URL from localhost:8080 to kubernetes-node-ip:31112
i.e.
```
provider:
name: faas
gateway: http://192.168.4.95:31112
```
[Your first serverless Python function with OpenFaaS](https://blog.alexellis.io/first-faas-python-function/)
You can also deploy the samples from the [FaaS-cli](https://github.com/alexellis/faas-cli), but change the gateway address as above.
**Use the UI**
Click "New Function" and fill it out with the following:
| Field | Value |
-------------|------------------------------|
| Service | nodeinfo |
| Image | functions/nodeinfo:latest |
| fProcess | node main.js |
| Network | default |
* Test the function
Your function will appear after a few seconds and you can click "Invoke"